Compressor



June 29 1926. 1,590,766

C. E. L. LIPMAN COMPRESSOR Filed Jan. l2, 1924 2 SheetSSlfmlet 1 June 291926.

4ci. E. L. LIPMAN COMPRESSOR Filed Jan. '12. 1924 2 sheets-sheet 2 @MILPatented June 29, 1926.

UNITED STATES PATENT oFFicE.

CARL E. L. LIPMAN, F IBELOIT, WISCONSIN, ASSIGNOR T0LIPMAN-BEFRIGERATIOH COMPANY, OF BELOIT, WISCONSIN A COBLEORATION OFDELAWARE.

COMPRESSOR.

Application led January 12:/1924. Serial'No. 685,743.

' This invention relates in general to compressors; and while theprinciples of my` invention may be embodied in compressors adapted formany purposes, the form of compressor herein illustrated is designedparticularly as an ammonia compressor suitable for use in refrigeratingapparatus.

One of the primary purposes of this invention is to provide a compressorwhich will be compact in structure and capable of being economicallymanufactured and assembled, and which shall be so constructed that itwill be strong, durable and eiiicient in use, and at the same time iscapable of being quickly dismantled for purposes of inspection orrepairs.

Another object of the invention is to provide a compressor which willseparate from the compressed ammonia leaving the cylinder any oil whichmay be carried along therewith, and which will cause the separated oilto accumulate in a trough or groove, from which it may be drained atintervals. A

Other objects and advantages of this invention should be readilyappreciated as the same becomes better understood by reference to thefollowing description, when considered in connection with the accompany-30 ingdrawings.

eferring to the drawings :f-

Fig. l is a vertical sectional view through a compressor embodying myinvention;

Fig. 2 'is a fragmentary side elevation thereof looking toward the.right at Fig. l;

Fig. 3 is a sectional view on the line 3-3 of Fig. l; and

Fig. 4 is a plan view of the cylinder head.

Referring now to the .drawings more in detail, reference character 5indicates generally the crank case of my improved compressor, providedwith a bearing 6 inwhich.

is journaled the crank shaft 7 provided with a crank 8. The upperportion of the crank case is shaped to provide a Hat shelf 9, from thecenter of which projects upwardly a cylindrical crosshead guide 11.

A cylindrical block 12 is shaped to provide a hollow base portionadapted to slidingly embrace the perimeter of the guide 11, by which itis steadied, the base being'provided with a flange 13 resting upon theshelf 9 and securely attached thereto by a series of fastening bolts14.-

' Immediately above the guide l1 the cyl` inder block is cored out toprovide a chamber v15, and above this chamber it is re'- stricted toform the cylinder proper 16. A

cylinder head 17 is secured to the top of chamber formed within apending Harige orv apron 2l. Around the passage 19 and in verticalalignment with the apron 21, a collecting trough to groove 22I is formedin the cylinder head to receive any oil which may be delivered from thecylinder and which is separated from the compressed ammonia delivered,by the apron 21, from which said oil drips into the groove 22. Aremovable drain plug 23 affords provision for draining off the collectedoil when desirable.

Within the crosshead guide 11, a lcylindrical crosshead 24, is disposedand is adapted to be reciprocated longitudinally by a connecting rod 25connecting the crosshead with the crank 8. A piston rod 26, extendingupwardly from the crosshead, is connected at its upper end with a piston27, reciprocable in the cylinder 164 and provided with a valve 28, pastwhich the ammonia, or other me-4 Y From the upper end of this passage,thereturning refrigerating medium entersthe chamber 15, and then uponthe downward stroke of the piston 27 Hows pastthe valve 28 i-nto thecylinder above the piston so that upon the upward stroke of the pistonthis medium is compressed. From the cylinder head the medium Hows pastthe valve 30 and through the condenser coil 33, comprising a series ofconvolutions surrounding the cylinder block, the lower end of the coilbeing connected to an upwardly extending boss 34, which communicates Thei through a passage 35, coredii'n 'theupper yrtion of the v'crankcaseawith a V'pipe leading to the ammonia receiver. f

Cooling of the compressor and Vformed between the perimeter of the-`cylfyinder block and ,a cap orshell37, which near the yto sets down' over`the 'coils `and is secured at l its bottom to the shelf k9 by aseries offasteningV bolts 38. The water enters the bottom of the jacket through apassage 39 connected at its lower vend with a-.su ply pipe 40, andrising in-.the jacket -overdbws thereof through an overflow pipe'4l,which is connected" by a passage 42 with the water delivery pipe 43.

Y In order to Yprevent leakage of embracingjthe piston rod`i26 isprovide referencehto `Figf'l it Twill' be observed o-landxcomprises amemberA 44 s e- -curedfbyriolts45 .to the top of the guide 11,Y and apacking nut- 46 threaded into. the

i member between which. and the member compressed is `drawn into the`'chamber .15 :through the pipe 29fand passages 3l and 32 uponA 'the' au, `uipstrokc ofthepiston, and atthesame, time A and forced 'outwardly-fintol thev condenser] e ymedium above v.the piston is compressed coil33. Any oil which may be carriedzby the medium is separated therefrominthe v gglnder head and is collected in the groove Water flowing intothe water jacket from the pipe 40 clrculates around the cylinder andthecondenser coils, inallyoverflowing byi 43.

P Pe l Itis believed that the construction,` operation and many of theattendant advantages of my invention will be understood and appreciatedfrom the foregoing.- without further fdescription, and while a preferredembodiment is shown and described, obvi.

ouslyv the-structural( details may be varied wide without departin `froml the essence of the invention, as define in theA following claims.

" I claimz-L the combination .of a crank case provided with anupwardly'ex-v tending cylindrical crosshead guide, a cylinder blockcomprising a base surrounding said -de and secured to the crank case,

Aa suction passage formed by opposed grooves in said guide andcylinder-block, and means operable within said block for compressing themedium entering through said passa e.

2. In a compressor, the combination o a the con- --denser coils is.effected by a `water jacket ammonia from the chamber`15 into the crankcase, andalso` forrthe purpose of precludingoil zo'-Efrom'workingupwardly past the crosshead 'into the chamber 1 ,5,*a packing glandsnugl cylindrical crosshead through pipe 41 and being delivered*- `saidcylinder' lock. l 5.','In a compressor, the combination of a crank caseprovided with an upwardly extending cylindrical crosshead guide,'acylinder block comprising a base surrounding said guide and secured tothe crank case and afrestricted portion above said guide forming vthecylinder proper, a hollow cylinder head provided withan internal oilcollecting groove, a suction passage communicating Awith the interior ofsaid cylinder block beneath said cylinder proper, a deliveryVpiplelcommunicating with the interior of said cy' der head, a crank insaid crank case, a crosshead operable thereby, a piston in said'cylinder, and .a connection between said piston and said crosshead.

l 3.-- In a compressor, the combination of a crank'case provided with anupwardly exi de, a' cross head reciprocable insaid gui e, a cylinderblock embracing rsaid guide andl provided I above the guide with acylinder pro er, .a

piston insaid cylinder connected wit said crosshead, a packi glandmounted 'upon the upper'end of said'V guide and embracin v thepistonrod, a suction passage forme inthe walls of said guide and said block, aYhollow cylinder head, and means therein ,foi-'separating and collectinioil-delivered fromy said medium. 1 A j.

4L In a eompressor,the'combination of a crank'case formed to. provide anupwardly extendin cylindrical crosshead guide, a cylinder lock,supported by said crankcase cylinder`- with e compressed `andsurroundingsaid guide', a cylinder head` mounted on said bl y k water inlet andldeand communicating with a water jacket around said block, a deliverypassage formed -inithe crank case andl with which the de- -crank case, acilinder block supported thereby, a cylinder ead mounted upon said blockand provided with oil separation and collection means, ay pistonreciprocablev in the .cylinder block, adpiston rod, a packing glandsurrounding 'sai rod` and carried by said crank case, and asuctionpassage provided insaid crank case and said block through whichcommunication' is established with said cylinder.

6. In-a -compressor,f.the` combination of a crank case provided withl anupwardl extending crosshead guide', a cylinder lock comprising a basesurrounding said guide, and a-cyllnder proper above the guide, a suctionpassage comunicating with the interior 'of said block below the cylinderlivery'passages formediin saidcrank case. l

'of Bald guide and proper, and means operable within said 7 Inacompressor, the combination of a crank case, a cylinder block supportedthereby, a cylinder head provided with oil sep-ara tion and collectionmeans, a. piston recip? wardly therefrom,

8. ln a compressor, the combination of a crank case a crosshead ideprojecting upa cynder block having its lower portion surrounding saidguide' and its upper portion bored to provide a cylinder, a cylinderhead provided with oil 15 separation and collection means, a piston insaid cylinder, a piston .rod extending downwardly therefrom into saidguide, an crosshead to which the lower end of said rod is connected, anda packing gland sur-l 20 roundin said rod between said crosshead and saipiston. p

CARL E. L. LPMAN.

